论文部分内容阅读
近几年,吉林省的梨树生产有了较快的发展,栽植面积超过3万多公顷,栽种梨树成为广大农民发家致富的支柱产业。但是,梨树生产上普遍存在着病虫防治不力的现象,最近几年中国梨木虱危害猖獗,它以若虫危害为主,若虫淹没于分泌的粘液中,药剂不易接触虫体,加之它一年发生3—4代,世代重叠,给防治造成困难,用现行农药一连多次也难奏效,筛选出高效内吸虫杀剂成为生产上迫切的需要,为此,我们进行了25%阿克泰水分散粒剂防治梨木虱试验。
In recent years, there has been a rapid development in the production of pear trees in Jilin Province, with an area of more than 30,000 hectares planted and planting pear trees as the pillar industries for the vast number of peasants to make their fortunes. However, pest production is widespread with pest and disease control inefficiencies. In recent years, Chinese pear psylium has been endangered. It is mainly endangered to nymphs. Nymphs are submerged in secreted mucus and are not easily accessible to insects. In addition, Occurred 3-4 generations, generations overlap, to prevent the difficulties caused by the prevention and treatment with the existing pesticides repeatedly difficult to work, filter out the efficiency of the killing of insecticides to become an urgent need for production, for which we conducted a 25% Actel water Scattered granules against pear psylla test.